Engineering Board Exam Reviewer · Physics · easy

Total internal reflection can occur when light travels from:

1. A less dense medium to a denser medium
2. Any medium at normal incidence
3. Vacuum to glass
4. A denser medium to a less dense medium at an angle greater than the critical angle

Answer

D. A denser medium to a less dense medium at an angle greater than the critical angle

Solution

This is the principle of optical fibers.

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